function closeLayer() {  
	NC = (document.layers);  
	IE = (document.all);  
	Opera = (document.getElementById);  
	if(IE) document.all["myLayer"].style.display = "none";  
	if(NC) document.layers["myLayer"].display = "none";  
	if(Opera) document.getElementById("myLayer").style.display = "none"; 
}